Rectangular double donut



FIG. 1 is a top perspective view of a rectangular double donut showing my new design;

FIG. 2 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a front elevational view thereof, the rear elevational view being a mirror image thereof. 

The ornamental design for rectangular double donut, as shown and described. 